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MULTI-STROKE HYBRID PROPULSION SYSTEM

  • US 20090325756A1
  • Filed: 06/25/2008
  • Published: 12/31/2009
  • Est. Priority Date: 06/25/2008
  • Status: Active Grant
First Claim
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1. A method of operating a hybrid propulsion system for a vehicle including an internal combustion engine, a generator, and an energy storage device, the method comprising:

  • during a first condition, operating the engine in a two stroke cycle to produce a first engine output and charging the energy storage device by absorbing a first amount of the first engine output at the generator; and

    during a second condition, operating the engine in a four stroke cycle to produce a second engine output.

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